Hello I been offered to clean new construction houses in Dallas area how much can I charge for square feet?fisrt and second time?

How Do I Bid Final Construction Cleaning? | eHow

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Estimate your costs using one of two methods. Base your costs on square footage by charging a specific amount per square foot, or estimate them by the amount of time you expect it to take multiplied by an hourly rate.

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Add miscellaneous costs or charges to the contractor. For example, you might charge a fee to cover cleaning supplies, cleaning gear, and any equipment rentals you might need.

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Figure what it cost you and add a reasonable profit. Call a few companies and see what they charge, or ask a contractor what he pays already.